70010640 has 240 divisors, whose sum is σ = 278553600. Its totient is φ = 15418368.

The previous prime is 70010621. The next prime is 70010651. The reversal of 70010640 is 4601007.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145921 + ... + 146399.

It is an arithmetic number, because the mean of its divisors is an integer number (1160640).

Almost surely, 2^70010640 is an apocalyptic number.

70010640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70010640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139276800).

70010640 is an abundant number, since it is smaller than the sum of its proper divisors (208542960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70010640 is a wasteful number, since it uses less digits than its factorization.

70010640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 70010640 is about 8367.2361028000. The cubic root of 70010640 is about 412.1494101018.

Adding to 70010640 its reverse (4601007), we get a palindrome (74611647).

The spelling of 70010640 in words is "seventy million, ten thousand, six hundred forty".